Speaker
Mario Salerno
Description
Abstract:
We study Liouvillian exceptional points (LEPs) of quantum open systems, focusing on their emergence and structure in both continuous Lindbladian dynamics and discrete-time quantum circuits. Using an analytically solvable two-qubit model, we characterize LEPs manifolds and the associated bifurcations in parameter space. We show that LEPs persist in discrete brickwork completely positive trace-preserving (CPTP) circuits, retaining their characteristic non-Hermitian sensitivity. Our results establish a bridge between continuous open-system dynamics and stroboscopic quantum-circuit architectures, with implications for exceptional-point-based quantum sensing.